Lloyd and luna are using a method of birth control that is based on ovulation prediction. this couple is using a(n) method

Lloyd and Luna are using a method of birth control that is based on ovulation prediction. This couple is using a rhythm or calendar method.

Explanation:

A rhythm or calendar method is natural birth control method which consists of avoiding having sexual intercourse during the days of ovulation. It's a natural method as there's no use of any contraceptive. However, its effectiveness is not very high as the ovulation must be calculated very thoroughly and that's not so easy to do. It's generally used by people who want to conceive: they calculate the ovulation days to schedule their sexual activity to have more chances to conceive.

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based on the images pictured above, the major difference between the two cathedrals: the cathedral of notre dame and the amiens cathedral, is that the cathedral of notre dame emphasizes the horizontal lines while the amiens cathedral emphasizes the vertical lines.